Following instructions here:
https://nvchad.com/docs/quickstart/install/

They are pretty simple. I ran

sudo git clone https://github.com/NvChad/starter ~/.config/nvim && sudo nvim-linux64/bin/nvim

which succeeded.

Then I run :MasonInstallAll in nvim, but I am getting:

E492: Not an editor command: MasonInstallAll

Instructions say

Run :MasonInstallAll command after lazy.nvim finishes downloading plugins.

Maybe it didn’t finish dowloading? How do I know? Or is the problem elsewhere?